After you finish your fries, eat the ketchup packet. When you add your pasta to boiling water, toss the bag into the pot, too. If these instructions sound confusing to you, it's only because you haven't yet heard of Notpla, a London-based startup company that is designing a seaweed-based replacement for single-use plastic packaging. Founded in 2014, the company closed a £10 million ($13.5 million) Series A financing round last month, led by the VC firm Horizons Ventures, to scale and further develop its product line. Notpla's products are meant to be composted or dissolved after use -- though some are edible, too. Current offerings include sachets for condiments, water and even alcohol; a film wrap for products in your pantry or bathroom, like coffee or toilet paper; and takeaway boxes that replace plastic-based coating with seaweed lining to make them fully biodegradable. The Ooho can replace condiment packets and other single-serve liquids, while the seaweed-lined takea